15+21=-8x+6x

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Solution for 15+21=-8x+6x equation:


Simplifying
15 + 21 = -8x + 6x

Combine like terms: 15 + 21 = 36
36 = -8x + 6x

Combine like terms: -8x + 6x = -2x
36 = -2x

Solving
36 = -2x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '2x' to each side of the equation.
36 + 2x = -2x + 2x

Combine like terms: -2x + 2x = 0
36 + 2x = 0

Add '-36' to each side of the equation.
36 + -36 + 2x = 0 + -36

Combine like terms: 36 + -36 = 0
0 + 2x = 0 + -36
2x = 0 + -36

Combine like terms: 0 + -36 = -36
2x = -36

Divide each side by '2'.
x = -18

Simplifying
x = -18

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